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Old 09-11-2014, 09:45 PM   #107
clinebarger
Senior Member
 
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: 700R4 build thread.

4th Accumulator, AKA 3-4 Accumulator.

Check for wear at the Pin hole in the Piston, Insert the Pin in the Piston, Should be very little side to side movement...I see Very few 700's that have good Accumulator Pistons.
Check Pin for wear as well, Visually & with a Micrometer.

Install new Seal on Accumulator Piston.

Most '93 B-Body 4th Accumulators have no Spring, Install piston with "legs" Up...Toward the separator plate. (For the OP's Trans)

All other stock 700's, Install Piston "Legs" up in the Case, Then the Spring.

You can put the Spring in the Case, Then the Piston "Legs" Down. (Keeps the spring off the Separator Plate).

You can also Block the Accumulator with a Cup Plug or Checkball, I use Cup Plugs.

Whatever you do with the 4th Accumulator, It doesn't make much difference, As in, Firm to Hard 3-4 shifts are not possible with Accumulator manipulation or Blocking it all together.
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